How many tripeptides can be prepared by linking the amino acids glycine, alanine and phenyl alanine?

The correct order of increasing acidic strength among the following is

Which of the following belongs to the homologous series of \(\mathrm{C}_5 \mathrm{H}_8 \mathrm{O}_2 \mathrm{~N}\) ?

Species A, B, C, D formed in the following bond cleavages respectively are

If \(\bar{M}_w\) is the weight average molecular weight and \(\bar{M}_n\) is the number average molecular weight of a polymer, the poly dispersity index (PDI) of the polymer is given by

Which of the following is not a semi-synthetic polymer?

Vijayawada FM radio station broadcasts at frequency of 103.4 MHz. The wavelength of the corresponding radio waves (in \(\mathrm{m}\) ) is

If the line \(4 x-3 y+7=0\) touches the circle \(x^2+y^2-6 x+4 y-12=0\) at \((\alpha, \beta)\), then \(\alpha+2 \beta=\)

When a body is in $SHM$, then match the following.

$\mathrm{List} - \mathrm{I}$		$\mathrm{List} - \mathrm{II}$
$\left(\mathrm{A}\right)$	Velocity is maximum	$\left(\mathrm{I}\right)$	Acceleration is maximum
$\left(\mathrm{B}\right)$	$\mathrm{KE}$ is ${\left(\frac{3}{4}\right)}^{\text{th }}$ of total energy	$\left(\mathrm{II}\right)$	At mean position
$\left(\mathrm{C}\right)$	$\mathrm{PE}$ is ${\left(\frac{3}{4}\right)}^{\mathrm{th}}$ of total energy	$\left(\mathrm{III}\right)$	At half of the amplitude
$\left(\mathrm{D}\right)$	Acceleration is maximum	$\left(\mathrm{IV}\right)$	At $\frac{\sqrt{3}}{2}$ times the amplitude

 

The variance of the following continuous frequency distribution is
\(\begin{array}{lllll} \hline \text { Class Interval } & 0-10 & 10-20 & 20-30 & 30-40 \\ \hline \text { Frequency } & 2 & 3 & 4 & 1 \\ \hline \end{array}\)

Assertion (A): If \(B\) is a \(3 \times 3\) matrix and \(|B|=6\), then \(|\operatorname{Adj}(B)|=36\)
Reason (R): If \(B\) is a square matrix of order \(n\), then \(|\operatorname{Adj}(B)|=|B|^{\mathbf{n}}\)

When ' \(\mathrm{X}\) ' \(\mathrm{g}\) of graphite is completely burnt in a bomb calorimeter in excess of \(\mathrm{O}_2\) at \(298 \mathrm{~K}\) and \(1 \mathrm{~atm}\) pressure as given in the equation
\(\mathrm{C}\) (graphite) \(+\mathrm{O}_2(\mathrm{~g}) \rightarrow \mathrm{CO}_2(\mathrm{~g})\)
The temperature of calorimeter raised from \(298 \mathrm{~K}\) to \(302 \mathrm{~K}\). If the heat capacity of the calorimeter and molar enthalpy change for the reaction at \(1 \mathrm{~atm}\) and \(298 \mathrm{~K}\) are \(20.7 \mathrm{~kJ} \mathrm{~K}^{-1}\) and \(-248.4 \mathrm{~kJ} \mathrm{~mol}^{-1}\), ' \(\mathrm{X}^{\prime}\) in \(\mathrm{g}\) is

A magnetic field given by \(B(t)=\left(0.2 t-0.05 t^2\right) T\) is directed perpendicular to the plane of a circular coil containing 25 turns of radius \(1.8 \mathrm{~cm}\) and whose total resistance is \(5 \Omega\). The power dissipation at \(3 \mathrm{~s}\) is nearly